A production device for nanofiber yarn

Abstract

The present invention discloses a production device for nanofiber yarn, comprising a fixed line end and a moving line end for fixing the two ends of the yarn, comprising a control mechanism for controlling the moving line end to move away from the fixed line end from slow to fast, the moving line end and the fixed line end can keep the yarn horizontal during detection, comprising a high-speed visual system located below the detected yarn, which is configured to record data at the yarn breakage point, preferably comprising an electric slide and an electric slider sliding on the top thereof, the top of the electric slider is fixed with a limit seat, the outer wall of the limit seat is slidingly connected to an intermediate block through a slide groove, the moving line end is installed on the intermediate block, the control mechanism comprises a servo motor installed on the top of the electric slider, the output end of the servo motor is fixedly mounted with a crank, and the crank is slidingly connected to a transmission rod by opening a slide groove. The present invention can improve the accuracy of detecting the amount of yarn stretching.

Description

Technical Field

[0001] The present invention relates to the technical field of textile production, and in particular to a production device for nanofiber yarn. Background Art

[0002] Nanofiber yarn is made through electrospinning technology. Compared with ordinary yarn, it has stronger physical properties and is widely used in aviation, biomedicine or functional textiles. Therefore, there are strict requirements on the quality of nano yarn, and the physical properties of the yarn need to be tested during the production process.

[0003] This includes tensile testing.

[0004] The current tensile test is to detect its ultimate tensile length. By fixing one end of the yarn and using that end as the starting point for tensile testing, the yarn is stretched at a constant speed during the test. As the stretching increases, it becomes increasingly unstable, resulting in inaccurate recording of the stretching amount. Summary of the Invention

[0005] The purpose of the present invention is to provide a production device for nanofiber yarn, which can improve the accuracy of detecting the stretching amount of yarn and solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a production device for nanofiber yarn, comprising a fixed line end device and a moving line end device for fixing the two ends of the yarn.

[0007] It includes a control mechanism that controls the moving line end device to move away from the fixed line end device from slow to fast.

[0008] The moving yarn end device and the fixed yarn end device can keep the yarn level during detection.

[0009] It includes a high-speed vision system located below the yarn being inspected, which is configured to record data at the point where the yarn breaks.

[0010] Preferably, it includes an electric slide and an electric slider sliding on the top thereof, a limit seat is fixed on the top of the electric slider, an intermediate block is connected to the outer wall of the limit seat through a sliding groove for limiting sliding, and the moving line end device is installed on the intermediate block.

[0011] The control mechanism includes a servo motor installed on the top of the electric slider, and a crank is fixedly installed on the output end of the servo motor. The crank is slidably connected to a transmission rod through a sliding groove. The transmission rod passes through and rotates inside the intermediate block. In the initial state, the crank remains vertical and rotates clockwise.

[0012] Preferably, the outer wall of the intermediate block is fixedly connected to a mounting seat, and a driven column is rotatably connected to the mounting seat via a first rotating shaft. The moving line end device is fixedly mounted on one end of the first rotating shaft passing through the mounting seat, and the outer wall of the driven column is provided with a guide groove connected end to end, and the guide groove includes a horizontal section and a spiral section, and the two ends of the spiral section are respectively connected to the two ends of the horizontal section, and the two ends of the spiral section are respectively higher and lower than the depth of the horizontal section, and also includes a first mounting plate slidably connected to the top of the electric slider, and a positioning rod with elastic contraction is installed on the first mounting plate, and the first mounting plate can control the positioning rod to approach the driven column. When the first mounting plate remains fixed and stationary, the driven column will rotate one circle when approaching the line end device, and will not interfere with the driven column moving away from the line end device.

[0013] Preferably, the outer wall of the first mounting plate is slidably connected to a threaded block, the outer wall of the threaded block is fixedly mounted with a rod sleeve, a limiting groove for sliding the positioning rod is provided inside the rod sleeve, and a spring is fixedly mounted between the end of the positioning rod and the inner wall of the limiting groove.

[0014] Preferably, a shaft lock for limiting the rotation of the first shaft is installed on the outer wall of the mounting seat, and when the first mounting plate and the positioning rod are separated from the guide groove, the shaft lock locks the rotation of the first shaft.

[0015] Preferably, a screw groove is provided on the outer wall of the first mounting plate, a screw is rotatably connected to the inner wall of the screw groove, the threaded block is limitedly slidably connected to the inner wall of the screw groove, and the threaded block is threadedly connected to the outer wall of the screw.

[0016] Preferably, the high-speed vision system is slidably mounted on a calibration base on top of the electric slide, and a plurality of high-speed cameras for monitoring the yarn are mounted on top of the calibration base, with the output ends of the high-speed cameras facing the yarn.

[0017] Preferably, the wire end device includes a second mounting plate fixedly mounted on the top of the electric slide, and a turntable is controllably connected to the second mounting plate for rotation. The annular outer wall of the turntable is provided with a wire groove, and a barb for hooking the yarn is installed inside the wire groove.

[0018] Preferably, a rotatable second shaft passes through the outer wall of the second mounting plate, a worm gear is fixedly connected to the outer wall of the second shaft, and a worm engaged with the worm gear is rotatably connected to the outer wall of the second mounting plate.

[0019] Preferably, the outer wall of the second mounting plate is fixedly mounted with a cylinder, the output end of the cylinder is fixedly connected with an arc-shaped clamp, and when the cylinder is outputting, the arc-shaped clamp can extend into the wire groove and limit the yarn.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention uses the coordination between the fixed line end device, the dynamic line end device and the control mechanism to fix and straighten the two ends of the yarn through the fixed line end device and the dynamic line end device, and then controls the movement of the dynamic line end device through the control mechanism to pull one end of the yarn, thereby being able to detect the tensile strength of the yarn and its ultimate tensile length.

[0022] In the process of the control mechanism controlling the movement of the moving line end device, the moving line end device will move from slow to fast, which can avoid the problem of reduced measurement accuracy due to a long yarn breaking process, and make the yarn break instantly under the stretching amount, thereby improving the accuracy of stretching amount detection. The closer the yarn is to the breaking stretching length, the more unstable it is. Once gradual breaking occurs in a certain tension section, the accurate value of the stretching amount cannot be determined, which will affect the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the right view structure;

[0025] Figure 3 Schematic diagram of the structure of the control mechanism of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the driven column of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the line terminal of the present invention;

[0028] Figure 6 This is a structural diagram of the line terminal of the present invention from another perspective.

[0029] In the figure: 1. Electric slide; 2. Electric slider; 3. Limit seat; 4. First mounting plate; 5. Crank; 6. Arc clamp; 7. High-speed camera; 8. Second mounting plate; 9. Turntable; 11. Cylinder; 12. Servo motor; 13. Mounting seat; 14. Intermediary block; 15. Drive rod; 16. Driven column; 17. First rotating shaft; 18. Positioning rod; 19. Threaded block; 20. Screw; 21. Rod sleeve; 22. Spring; 23. Wire groove; 24. Barb; 25. Second rotating shaft; 26. Worm gear; 27. Worm. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 6 The present invention provides a technical solution: a production device for nanofiber yarn, including a fixed line end device and a moving line end device for fixing the two ends of the yarn.

[0032] It includes a control mechanism that controls the moving line end device to move away from the fixed line end device from slow to fast, so as to avoid the unstable state before the yarn breaks affecting the detection.

[0033] The moving yarn end device and the fixed yarn end device can keep the yarn level during detection.

[0034] It includes a high-speed vision system located below the yarn being inspected, and is configured to record data at the point where the yarn breaks.

[0035] During the production process, the physical tensile properties of the yarn need to be tested. During the tensile test, it is necessary to ensure that the yarn breaks instantly under the limit state to ensure the accuracy of the test data, rather than gradually breaking under a certain tension, which makes it impossible to determine the accurate value of the stretching amount.

[0036] The two ends of the yarn are fixed and straightened by the fixed line end device and the dynamic line end device. At this time, the dynamic line end device is controlled by the control mechanism to move so that one end of the yarn is pulled, thereby detecting the tensile strength of the yarn and its maximum tensile length.

[0037] In the process of the control mechanism controlling the movement of the moving line end device, the moving line end device will move from slow to fast, which can avoid the problem of reduced measurement accuracy due to a long yarn breaking process, and make the yarn break instantly under the stretching amount, thereby improving the accuracy of stretching amount detection. The closer the yarn is to the breaking stretching length, the more unstable it is. Once gradual breaking occurs in a certain tension section, the accurate value of the stretching amount cannot be determined, which will affect the test results.

[0038] It should be noted that the present invention is applicable to single or multiple yarns.

[0039] By installing a high-speed vision system, the time when the yarn breaks can be recorded, thereby judging the operation time of the control mechanism and the displacement distance of the moving line end device. Secondly, the high-speed vision system can also record the situation when the yarn breaks frame by frame and judge whether it is an instantaneous break based on the break situation.

[0040] One of the more preferred installation methods is Figure 1 and Figure 3 As shown, it includes an electric slide 1 and an electric slider 2 sliding on the top thereof. A limit seat 3 is fixed on the top of the electric slider 2. An intermediate block 14 is connected to the outer wall of the limit seat 3 through a sliding groove for limiting sliding. The moving line end device is installed on the intermediate block 14. When the intermediate block 14 slides, it can drive the moving line end device to move synchronously.

[0041] The slide groove on the limiting seat 3 is configured to allow the intermediate block 14 to slide horizontally, the horizontal sliding direction is consistent with the stretched direction of the yarn, and the slide groove is a through-type notch.

[0042] One of the more preferred embodiments is used to control the sliding of the intermediate block 14. The control mechanism includes a servo motor 12 installed on the top of the electric slider 2. The output end of the servo motor 12 is fixedly installed with a crank 5. The crank 5 is slidably connected to the transmission rod 15 through a sliding groove. The transmission rod 15 passes through and rotates inside the intermediate block 14. In the initial state, the crank 5 remains vertical and rotates clockwise.

[0043] The working principle of the control mechanism is as follows: the servo motor 12 is the power output end, and the crank 5 rotates synchronously with the output end of the servo motor 12. Since the transmission rod 15 is connected to the outer wall of the crank 5 in a limited sliding manner, and the transmission rod 15 and the intermediate block 14 are in a rotational connection relationship, when the crank 5 rotates, the intermediate block 14 will be driven to slide horizontally through the transmission rod 15, thereby controlling the displacement of the moving line end device to perform yarn stretching detection.

[0044] Secondly, a crank slider mechanism is formed between the crank 5, the transmission rod 15, the intermediate block 14 and the limit seat 3. In the initial state, when the crank 5 rotates clockwise at a constant speed, the intermediate block 14 will move from slow to fast, thereby reducing the instantaneous breakage of the yarn under extreme conditions.

[0045] The servo motor 12 can be reset when it rotates counterclockwise.

[0046] Secondly, the servo motor 12 can be a low-speed, high-torque motor to ensure its load-bearing capacity.

[0047] In one of the more preferred embodiments, the outer wall of the intermediate block 14 is fixedly connected to the mounting seat 13, and the mounting seat 13 is rotatably connected to the driven column 16 through the first rotating shaft 17. The moving line end device is fixedly mounted on one end of the first rotating shaft 17 that passes through the mounting seat 13. The outer wall of the driven column 16 is provided with a guide groove connected end to end. The guide groove includes a horizontal section and a spiral section. The two ends of the spiral section are respectively connected to the two ends of the horizontal section, and the two ends of the spiral section are respectively higher and lower than the depth of the horizontal section. It also includes a first mounting plate 4 that is slidably connected to the top of the electric slider 2. A positioning rod 18 with elastic contraction is installed on the first mounting plate 4. The first mounting plate 4 can control the positioning rod 18 to approach the driven column 16. When the first mounting plate 4 remains fixed and stationary, when the driven column 16 approaches the line end device, it will rotate one circle and will not interfere with the driven column 16 moving away from the line end device.

[0048] After production is completed, the yarn needs to be tested for torque, that is, the yarn needs to be rotated multiple times to simulate the torsional state of the yarn in actual use, and then the twisted yarn is tested for stretching to obtain more experimental data.

[0049] like Figure 4 and Figure 5 As shown, when the first mounting plate 4 controls the end of the positioning rod 18 to extend into the horizontal section in the guide groove, and because the two ends of the spiral section are respectively higher and lower than the depth of the horizontal section, when the driven column 16 slides, the positioning rod 18 will be transferred from the horizontal section to the spiral section. Through the setting, the positioning rod 18 can rotate while approaching the line end device.

[0050] Therefore, the normal state of the yarn will be detected in the process of the moving line end device moving away from the fixed line end device for a short period of time. In the process of resetting the moving line end device, the yarn can be twisted one circle, and then the moving line end device is moved away from the fixed line end device to detect the twisted yarn. The yarn will be twisted one circle for each cycle, so that the number of twists of the yarn can be gradually increased. At the same time, the stretching amount of the yarn in each state is tested to judge the tensile performance of the yarn in the twisted state.

[0051] Among the more preferred embodiments, the outer wall of the first mounting plate 4 is slidably connected to a threaded block 19, the outer wall of the threaded block 19 is fixedly installed with a rod sleeve 21, the inside of the rod sleeve 21 is provided with a limiting groove for the sliding of the positioning rod 18, and a spring 22 is fixedly installed between the end of the positioning rod 18 and the inner wall of the limiting groove.

[0052] Since there is a depth difference between the spiral section and the horizontal section, and the spiral section itself also has a depth difference, in order to enable the positioning rod 18 to better cooperate with its guide groove, when the positioning rod 18 slides to a lower depth, it will cause the spring 22 to deform and compress, thereby adapting to the guide groove.

[0053] In an embodiment for limiting the random rotation of the driven column 16, a shaft lock for limiting the rotation of the first shaft 17 is installed on the outer wall of the mounting seat 13. When the first mounting plate 4 and the positioning rod 18 are separated from the guide groove, the shaft lock locks the rotation of the first shaft 17.

[0054] When the positioning rod 18 enters the first mounting plate 4, it indicates that the torque of multiple yarns needs to be tested.

[0055] However, when the yarn stretching amount needs to be directly detected, the positioning rod 18 needs to be moved out, the torque detection is released and the stretching amount detection is entered. At this time, the rotation of the driven column 16 needs to be limited.

[0056] An embodiment of adjusting the position of the threaded block 19 and the positioning rod 18, a screw groove is opened on the outer wall of the first mounting plate 4, the inner wall of the screw groove is rotatably connected to the screw 20, the threaded block 19 is limitedly slidably connected to the inner wall of the screw groove, and the threaded block 19 is threadedly connected to the outer wall of the screw 20.

[0057] When a stretching test with a smaller stretching amount is required, it can be achieved by adjusting the position of the positioning rod 18. That is, when the stretching amount to be detected is less than the length of the horizontal section, in order to prevent the driven column 16 from rotating, the position of the positioning rod 18 can be adjusted to change the distance that the driven column 16 moves upward.

[0058] Secondly, by making the position of the positioning rod 18 adjustable, when the driven column 16 is replaced according to different yarns, the positioning rod 18 can be adjusted accordingly, so that the positioning rod 18 does not need to be disassembled and can be directly adapted and adjusted.

[0059] In one of the more preferred embodiments, the high-speed vision system is slidably mounted on a calibration base on top of the electric slide 1, and a plurality of high-speed cameras 7 for monitoring the yarn are mounted on top of the calibration base, with the output end of the high-speed camera 7 facing the yarn.

[0060] like Figure 1 As shown, by setting up multiple high-speed cameras 7, most of the yarn can be covered, or the high-speed camera 7 can be slid to the midpoint of the yarn, so that the breaking time and the situation when the yarn breaks can be monitored to determine whether the yarn breaks instantly or gradually.

[0061] Furthermore, the wire end device includes a second mounting plate 8 fixedly mounted on the top of the electric slide 1, and a turntable 9 is controllably connected to the second mounting plate 8 for rotation. The annular outer wall of the turntable 9 is provided with a wire groove 23, and a barb 24 for hooking and pulling the yarn is installed inside the wire groove 23.

[0062] like Figure 5 and Figure 6As shown, when one end of the yarn is fixed on the hook 24, when the turntable 9 is rotated, the yarn can be tensioned and the yarn is in a straight state, thereby ensuring the accuracy of the stretching detection. Secondly, the wire groove 23 can limit the yarn inside it to avoid the yarn from deflecting. At the same time, the horizontal tangent of the top of the wire groove 23 is level with the moving wire end device, so that the yarn can maintain its horizontal state after being straightened, thereby ensuring that the yarn is evenly stressed, avoiding the influence of friction or shear force on the yarn, and improving the accuracy of detection.

[0063] The yarn end device is a yarn clamp that can fix the stretched end of the yarn.

[0064] Furthermore, a rotatable second shaft 25 passes through the outer wall of the second mounting plate 8, a worm gear 26 is fixedly connected to the outer wall of the second mounting plate 8, and a worm 27 rotatably connected to the outer wall of the second mounting plate 8 is engaged with the worm gear 26. The worm 27 and the second shaft 25 constitute a worm gear transmission system with a self-locking function, which can adjust the rotation of the turntable 9 in real time to control the tension of the yarn.

[0065] Furthermore, the outer wall of the second mounting plate 8 is fixedly mounted with the cylinder 11, and the output end of the cylinder 11 is fixedly connected with the arc clamp 6. When the cylinder 11 outputs, the arc clamp 6 can extend into the wire groove 23 and limit the yarn. During the torque detection process, in order to prevent the twisting of the yarn from extending to the inside of the wire groove 23, the output of the cylinder 11 is controlled to fix the part of the yarn located at the top of the wire groove 23 and before the tangent.

[0066] In summary, the present invention can improve the accuracy of detecting the yarn stretching amount.

[0067] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the conventional means mature in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A production device for nanofiber yarn, characterized in that : including a fixed line end and a moving line end for fixing the two ends of the yarn; including a control mechanism for controlling the moving line end to move away from the fixed line end from slow to fast; the moving line end and the fixed line end can keep the yarn level during detection; including a high-speed vision system located below the yarn being detected, which is configured to record data at the yarn breakage point; The invention comprises an electric slide (1) and an electric slider (2) sliding on the top thereof, a limit seat (3) being fixed on the top of the electric slider (2), an intermediary block (14) being connected to the outer wall of the limit seat (3) by sliding through a slot, and a moving line end device being installed on the intermediary block (14); a control mechanism comprising a servo motor (12) installed on the top of the electric slider (2), a crank (5) being fixedly installed on the output end of the servo motor (12), a transmission rod (15) being connected to the crank (5) by sliding through a slot, and the transmission rod (15) being passed through and rotating inside the intermediary block (14), and in an initial state, the crank (5) being kept in a vertical state and rotating in a clockwise direction; The outer wall of the intermediate block (14) is fixedly connected with a mounting seat (13), and the mounting seat (13) is rotatably connected with a driven column (16) through a first rotating shaft (17). The moving line end device is fixedly mounted on one end of the first rotating shaft (17) passing through the mounting seat (13), and the outer wall of the driven column (16) is provided with a guide groove connected end to end, and the guide groove includes a horizontal section and a spiral section, and the two ends of the spiral section are respectively connected with the two ends of the horizontal section, and the two ends of the spiral section are respectively higher and lower than the depth of the horizontal section. It also includes a first mounting plate (4) slidably connected to the top of the electric slider (2), and a positioning rod (18) with elastic contraction is installed on the first mounting plate (4). The first mounting plate (4) can control the positioning rod (18) to approach the driven column (16). When the first mounting plate (4) remains in a fixed and stationary state, when the driven column (16) approaches the line end device, it will rotate one circle and will not interfere with the driven column (16) moving away from the line end device. The outer wall of the first mounting plate (4) is slidably connected to a threaded block (19), the outer wall of the threaded block (19) is fixedly mounted with a rod sleeve (21), the rod sleeve (21) has a limiting groove inside for the sliding of the positioning rod (18), and a spring (22) is fixedly mounted between the end of the positioning rod (18) and the inner wall of the limiting groove; A shaft lock for limiting the rotation of the first shaft (17) is installed on the outer wall of the mounting seat (13); when the first mounting plate (4) and the positioning rod (18) are separated from the guide groove, the shaft lock locks the rotation of the first shaft (17); A screw groove is provided on the outer wall of the first mounting plate (4), a screw (20) is rotatably connected to the inner wall of the screw groove, the threaded block (19) is limitedly slidably connected to the inner wall of the screw groove, and the threaded block (19) is threadedly connected to the outer wall of the screw (20).

2. The nanofiber yarn production device according to claim 1, characterized in that The high-speed vision system is slidably mounted on a calibration base on top of an electric slide (1), and a plurality of high-speed cameras (7) for monitoring yarns are mounted on top of the calibration base, with the output ends of the high-speed cameras (7) facing the yarns.

3. The nanofiber yarn production device according to any one of claims 1-2, characterized in that The wire end device comprises a second mounting plate (8) fixedly mounted on the top of the electric slide (1); a turntable (9) is controllably connected to the second mounting plate (8); a wire groove (23) is provided on the annular outer wall of the turntable (9); and a barb (24) for hooking and pulling the yarn is installed inside the wire groove (23).

4. The nanofiber yarn production device according to claim 3, characterized in that A rotatable second rotating shaft (25) is passed through the outer wall of the second mounting plate (8), a worm gear (26) is fixedly connected to the outer wall of the second rotating shaft (25), and a worm (27) meshing with the worm gear (26) is rotatably connected to the outer wall of the second mounting plate (8).

5. The nanofiber yarn production device according to claim 3, characterized in that The outer wall of the second mounting plate (8) is fixedly mounted with a cylinder (11), and the output end of the cylinder (11) is fixedly connected with an arc-shaped clamp (6). When the cylinder (11) is outputting, the arc-shaped clamp (6) can extend into the wire groove (23) and limit the yarn.

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